Go Back   AC3D Forums > General > AC3D General
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Display Modes
Old 30th July 2008, 09:15 AM   #1
HowDo
Member
Advanced member
 
Join Date: Nov 2007
Posts: 33
Default cutting from the inside part of an object?

Hi All,

Have worked out how to cut bits objects away, however I can't see the simple way to cut away an outer edge.

so say you have a square block and you want a round cut along one side, I can do it if its like so )_| but how do you do like this (_| the round bit begin on the edge. I think you call it quarter bead.
HowDo is offline   Reply With Quote
Old 30th July 2008, 03:51 PM   #2
lisa
Senior Member
Professional user
 
lisa's Avatar
 
Join Date: Mar 2005
Location: Phoenix, AZ
Posts: 917
Default Re: cutting from the inside part of an object?

Hmmm. Easiest way is probably to make a cylinder, cut away half. Make a divided cube--so you have points in the middle to join the cylinder center vertices to--and remove one face of the cube. Then merge them together. You can use Snap Vertices by Distance with a small distance to merge the points together so you don't have to snap them by hand.

That will give you something like this:
Attached Images
 
lisa is offline   Reply With Quote
Old 30th July 2008, 05:28 PM   #3
HowDo
Member
Advanced member
 
Join Date: Nov 2007
Posts: 33
Default Re: cutting from the inside part of an object?

Thanks again Lisa, so the long way is the only way, be nice if they could make a cut inside out function, not that I would see much use for it except for doing this.

found a site that had some objects to practice making so been trying ways to build them, plus getting my head around how the features work.

cheers.
HowDo is offline   Reply With Quote
Old 30th July 2008, 06:38 PM   #4
lisa
Senior Member
Professional user
 
lisa's Avatar
 
Join Date: Mar 2005
Location: Phoenix, AZ
Posts: 917
Default Re: cutting from the inside part of an object?

Anytime!

Yeah, you might be able to do it with the boolean tools on the object menu, too, but I don't think you'd get as clean geometry in the end.
lisa is offline   Reply With Quote
Old 30th July 2008, 07:13 PM   #5
tbd
Senior Member
Professional user
 
Join Date: May 2005
Location: Norway
Posts: 883
Default Re: cutting from the inside part of an object?

Another way to do it is make a cylinder, select half of it,(red) extrude along normal, delete the surfaces you dont need,(red) selct the vertices counterclockwise and do a crtl+shift+s to create a ordered surface.(green)
Attached Thumbnails
Click image for larger version

Name:	cut1.jpg
Views:	224
Size:	36.9 KB
ID:	1105  


Last edited by tbd; 30th July 2008 at 07:18 PM.
tbd is offline   Reply With Quote
Old 31st July 2008, 05:37 AM   #6
HowDo
Member
Advanced member
 
Join Date: Nov 2007
Posts: 33
Default Re: cutting from the inside part of an object?

I think my description of what I am trying to do is going of course

I am trying to cut the top and bottom curve of this object from a box.
Attached Images
 
HowDo is offline   Reply With Quote
Old 31st July 2008, 12:54 PM   #7
Mossie
Senior Member
Professional user
 
Mossie's Avatar
 
Join Date: Dec 2003
Location: UK
Posts: 369
Default Re: cutting from the inside part of an object?

Would be easier to build the full curve and cut off the box section.
__________________
Regards, Gerry "Mossie" Mos
--------------------------------------------------------------------------
WW1 Aircraft Library
http://ww1-aircraft.info/

Mossie 3D CAD, "Prompt and Precise"
http://mossie3dcad.com/
Mossie is offline   Reply With Quote
Old 31st July 2008, 01:06 PM   #8
HowDo
Member
Advanced member
 
Join Date: Nov 2007
Posts: 33
Default Re: cutting from the inside part of an object?

Anyone know a good web site where you can find simple objects to practice making that teaches you how to do those shapes?
HowDo is offline   Reply With Quote
Old 4th August 2008, 07:03 PM   #9
lisa
Senior Member
Professional user
 
lisa's Avatar
 
Join Date: Mar 2005
Location: Phoenix, AZ
Posts: 917
Default Re: cutting from the inside part of an object?

Hmmm. I don't know of any sites off the top of my head, but I bet some college drafting classes might, and a lot of college classes put their materials online. I remember making odd shapes like that a lot in drafting class, although the class I took was pencil-and-paper.

For what it's worth, here's a quick video of how I'd tackle it:
http://independentdeveloper.com/files/makecurve.wmv
lisa is offline   Reply With Quote
Old 8th August 2008, 09:51 AM   #10
HowDo
Member
Advanced member
 
Join Date: Nov 2007
Posts: 33
Default Re: cutting from the inside part of an object?

Thank you Lisa,

That video is very informative , have seen in a few seconds where I have be going wrong doing something else, I see its a bit of working out what the shape is then pull or pushing bit afterwards.

Now try out following it as it played .

edit
been watching the video and I am a bit lost on how you are getting the vectors into a straight line.
I see when you drag over them, they turn green, what I can't make out is do you press a key to line them up or what, can't get it to do that bit.
cheers

Last edited by HowDo; 8th August 2008 at 03:54 PM.
HowDo is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -4. The time now is 09:03 AM.


AC3D Forum
(C) Inivis Limited 2020